Medidas de mitigação ao atropelamento de fauna em rodovias federais concedidas no Brasil

Gomes, Leonardo de Paula; Caixeta, Fernando Ferreira; Torres, Renata Rocha; Castro, Daniele Nunes de; Thomé, Gustavo Antunes; Lima, Rodolfo Ikaro Pinto; Sousa, Ana Carolina Pereira de; França, Rejane Marinho; Silva, Luciano Lourenço da

doi:10.17648/heringeriana.v13i1.917887

Cited by 2 publications

(1 citation statement)

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“…Preliminary studies are necessary for their correct application. Such measures can be directed at specific groups, like amphibians (Zank et al 2019), or applied to various groups in general (Caixeta et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Wildlife Roadkill Hotspots on Roads Crossing Conservation Units (UC) in the State of Sergipe, Brazil

Bomfim,

de Melo,

Madi

2024

Preprint

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Wildlife roadkill is a significant threat to biodiversity in Brazil, causing numerous animal fatalities annually. This study aimed to identify the primary locations of wildlife roadkill on two highways passing through Conservation Units (UCs) in Sergipe, examining the correlation between roadkill incidents and periods of drought and rainfall. From November 2021 to October 2022, 49 surveys were conducted along BR-235, near the Serra de Itabaiana National Park, and the Adil Dantas do Amor Cardoso highway, traversing the Mata do Crasto Private Natural Heritage Reserve. Surveys were carried out by motorcycle, traveling at a maximum speed of 60 km/h. To identify roadkill hotspots for each highway, we applied annual mortality indices (MI), Shannon diversity index (H'), species accumulation curves with area extrapolation (Bootstrap), and Kernel density estimation. On BR-235, 63 roadkill incidents were recorded, while on the Adil Dantas do Amor Cardoso highway, which has implemented mitigation measures, there were 15 incidents. No significant variation in roadkill frequency was observed between dry and rainy periods. Areas with mitigation measures experienced lower mortality rates. Determining MI and roadkill hotspots can inform the development of strategies to mitigate the impact of highways on wildlife within conservation areas.

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Section: Introductionmentioning

confidence: 99%

Wildlife Roadkill Hotspots on Roads Crossing Conservation Units (UC) in the State of Sergipe, Brazil

Bomfim,

de Melo,

Madi

2024

Preprint

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Wild fauna as roadkill on a highway in the semiarid region of northeastern Brazil

Ferreira¹,

Lima²,

Souza³

et al. 2023

Ethnobio Conserv

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The death of wild vertebrates run over by motor vehicles on highways is one of the main causes of the loss of wildlife diversity. The aim of the present study was to investigate the diversity of wild fauna in roadkill incidents on a stretch of highway in the semiarid region of Brazil. The survey was conducted between March 2020 and May 2021 through active searches using a motorcycle. Killed vertebrates were analyzed and photographed in situ. Wild fauna was studied based on ecological descriptors, speed of movement and average rate of roadkill incidents. We compared total observed richness to that expected using nonparametric estimators. A total of 464 road-killed vertebrates were represented by two species of amphibians, 17 reptiles, 17 birds and 10 mammals. Amphibians were the most affected, totaling 245 individuals. Colubridae was the family with the largest number of species affected. Boiruna sertaneja and Boa constrictor were the only medium-size to large snakes killed. Herpailurus yagouaroundi and Leopardus tigrinus are respectively categorized as “least concern” and “vulnerable” according to the IUCN. The species accumulation curves continued to rise, showing no sign of approaching to an asymptote. Chao 2 and Jack 2 were the main estimators for road-killed wild vertebrates considering total richness. The diversity reported here is considered to be underestimated and greater monthly sampling efforts are required. Conservation strategies are urgently needed for the protection of wild vertebrate fauna to mitigate the staggering loss of biodiversity caused by the construction and operation of roads and highways in Brazil.

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Medidas de mitigação ao atropelamento de fauna em rodovias federais concedidas no Brasil

Cited by 2 publications

References 10 publications

Wildlife Roadkill Hotspots on Roads Crossing Conservation Units (UC) in the State of Sergipe, Brazil

Wildlife Roadkill Hotspots on Roads Crossing Conservation Units (UC) in the State of Sergipe, Brazil

Wild fauna as roadkill on a highway in the semiarid region of northeastern Brazil

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